• 论文 •

### Loop细分曲面精加工刀具轨迹生成

1. 北京航空航天大学 机械工程及自动化学院, 北京 100191
• 收稿日期:2014-05-28 修回日期:2014-08-05 出版日期:2015-04-20 发布日期:2015-05-08
• 通讯作者: 赵罡(1972—), 男, 河北文安人, 教授, zhaog@buaa.edu.cn, 研究方向为复杂曲面造型、加工新技术、飞机数字化装配、虚拟现实技术及应用. E-mail:zhaog@buaa.edu.cn
• 作者简介:陈甜甜(1982—), 女, 上海人, 实验师, candy_ctt@163.com
• 基金资助:

国家自然科学基金资助项目(61170198); 中央高校基本科研业务费资助项目(YWF-14-JXXY-19)

### Tool path generation for Loop subdivision surface based finish machining

CHEN Tiantian, ZHAO Gang

1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
• Received:2014-05-28 Revised:2014-08-05 Online:2015-04-20 Published:2015-05-08

Abstract:

Both smooth design model and discrete machining model can be represented by the subdivision surface, which avoids the complex progress of model transformation. Subdivision surface can be used to generate a smooth limit surface on an arbitrary topology mesh, and thus has great advantage in modeling complex parts. In addition, it has great potential for applications in NC machining. The algorithm for tool path generation of finish machining based on Loop subdivision surface was investigated. The method of adaptive interpolation Loop subdivision surfaces was proposed to control the chord error between limit mesh and limit surface. The finish machining model was then decomposed into different regions by iso-slope curve tracing method, and different tool path patterns were calculated to obtain an even cusp height. Therefore, it is simple to generate the even cusp height tool path of the entire finish machining model, and the conflict between large-scale subdivision data and required high surface quality and precision is also solved. Milling test is implemented to verify the algorithm proposed.